Move By Proportion
class MoveByProportion(Scene):
def construct(self):
c = Circle()
d = Dot()
d.move_to(c.point_from_proportion(0))
l = Line(c.get_center(), d.get_center(), color=BLUE)
self.t_offset = 0
rate = 0.5
def get_line_to_circle():
return Line(c.get_center(), d.get_center(), color=BLUE)
def go_around_circle(mob, dt):
self.t_offset += (dt * rate)
print(self.t_offset)
mob.move_to(c.point_from_proportion(self.t_offset % 1))
d.add_updater(go_around_circle)
origin_to_circle_line = always_redraw(get_line_to_circle)
self.add(c, d, l, origin_to_circle_line)
self.wait()
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